Mop



FIG. 1 is a top view of the mop showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right-side view thereof;

FIG. 5 is a left-side view thereof; and,

FIG. 6 is a top-front-right perspective view thereof.

The broken-lines in the drawings depict portions of the mop that form no part of the claimed design. 

CLAIM The ornamental design for a mop, as shown and described. 